A hacker allegedly behind a spate of Twitter account hacks on Wednesday gained access to a Twitter “admin” tool on the company’s network that allowed them to hijack high-profile Twitter accounts to spread a cryptocurrency scam, according to a person with direct knowledge of the incident. The account hijacks hit some of the most prominent users on the social media platform, including leading cryptocurrency sites, but also ensnared several celebrity accounts, notably Bill Gates, Jeff Bezos, Elon Musk and Democratic presidential hopeful Joe Biden. Vice earlier on Wednesday reported details…